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Pointers on moving from LR 8 to LR 7.5?

Alan in Oakland

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Lightroom Classic version: 8.0 [ 1193777 ]
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Hi

I have found two bugs (one and two) in the Lightroom Classic 8 Filter bar, which are making me think that this version was released too early, and I need to revert to 7.5. I'd like some pointers on how to do that.

Some questions:

Am I right that Lightroom 8 and Lightroom 7.5 have different file formats, and that 7.5 can't read the newer format?

Am I right that Adobe only allows you to have one version of Lightroom Classic CC on your disk at a time (at least that is what Creative Cloud says)?

One thought is to revert to 7.5, open up my last backup in Time Machine (not sure how to find it tho since my old and new have the same names), and then synchronize the folders. This will take hours (days) since I have about 130,000 images, and Lightroom will be unusable while I do this. Of course, if I screw up, then the time will stretch to weeks.

Any thoughts on a least painful way to revert to an earlier version?
 

johnbeardy

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8 is really 7.6, just with the number rounded up. You can just uninstall 8 and reinstall 7.5 and open the same catalogue as before - but I think you are wasting your time doing so.
 

johnbeardy

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"Am I right that Lightroom 8 and Lightroom 7.5 have different file formats, and that 7.5 can't read the newer format?"

No, this is wrong on both counts.
 

Alan in Oakland

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Thank you! (I don't know why I thought that there was a file format change).

If you have time, let me know why you think that I am wasting my time (before I do waste my time). At least one bug (location metadata filters) seems to have been clearly added in LR 8, and it is annoying.
 

johnbeardy

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Well, I was only really expressing that view based on your "making me think that this version was released too early", which I don't agree with. I hadn't noticed bugs like you describe and I haven't tested them for myself, but if they affect you, you can simply go back to 7.5.

It is expected that the file format would indeed change for a new major version, but bear in mind my "rounded up" comment.
 

Alan in Oakland

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Thanks John. After I posted this, I figured out that one of the bugs is much less serious than I had thought, but it is good to know how to downgrade.
 
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